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<html>
<head>
<style>
body{font-family:consolas;}
a { text-decoration:none; color:blue; }
a:hover { text-decoration:underline; }
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<body>
<a href="#">
<span style="vertical-align: super;">super</span></a>
<a href="#">
<span style="vertical-align: top;">top</span></a>
<a href="#">
<span style="vertical-align: bottom;">bottom</span></a>
</body>